scholarly journals Detection of Infrasonic Frequency Loudspeaker Using Microwave Motion Sensor Module

2021 ◽  
Vol 1844 (1) ◽  
pp. 012017
Author(s):  
D Zaki ◽  
E Yudaningtyas ◽  
P Siwindarto ◽  
W Djuriatno
Author(s):  
Kyoung-Soo Chae ◽  
Hyun-Joon Kim ◽  
G. Hahm ◽  
Sung-Whan Cho ◽  
Ho-Joon Park ◽  
...  

2020 ◽  
Vol 10 (13) ◽  
pp. 4667 ◽  
Author(s):  
Joong-hee Han ◽  
Chi-ho Park ◽  
Jay Hyoun Kwon ◽  
Jisun Lee ◽  
Tae Soo Kim ◽  
...  

The agriculture sector is currently facing the problems of aging and decreasing skilled labor, meaning that the future direction of agriculture will be a transition to automation and mechanization that can maximize efficiency and decrease costs. Moreover, interest in the development of autonomous agricultural vehicles is increasing due to advances in sensor technology and information and communication technology (ICT). Therefore, an autonomous driving control algorithm using a low-cost global navigation satellite system (GNSS)-real-time kinematic (RTK) module and a low-cost motion sensor module was developed to commercialize an autonomous driving system for a crawler-type agricultural vehicle. Moreover, an autonomous driving control algorithm, including the GNSS-RTK/motion sensor integration algorithm and the path-tracking control algorithm, was proposed. Then, the performance of the proposed algorithm was evaluated based on three trajectories. The Root Mean Square Errors (RMSEs) of the path-following of each trajectory are calculated to be 9, 7, and 7 cm, respectively, and the maximum error is smaller than 30 cm. Thus, it is expected that the proposed algorithm could be used to conduct autonomous driving with about a 10 cm-level of accuracy.


2014 ◽  
Vol 536-537 ◽  
pp. 1131-1136
Author(s):  
Xiao Xi Liu ◽  
Ji Hua Fu ◽  
Zhi Tao Li

In various kinds of natural disasters, earthquake is one of the most serious threats to the lifeline engineering systems. In the earthquake, except of the structure was destroyed, the function of the lifeline engineering systems was often subject to serious damages or totally loss, even caused fire or blood, or gave away poisonous gas and other series of major secondary disasters. To strengthen the function of the lifeline engineering and avoid or reduce the occurrence of secondary disasters, a demonstrated system of earthquake emergency auto-handling applied in water supply was built. The system was composed by the ED-1 type ground motion sensor module unit, the Panasonic FP-X C30R type PLC unit, The Kunlun Tongtai TPC7062K type unified touch screen unit and the multifunction water tower testing unit. The STA/LTA method and spectral intensity method were applied to deal with the distant earthquake and the near earthquake separately. Through theory and experiment analysis, the earthquake emergency auto-handling system could accurately measures the seismic records and performs the earthquake emergency auto-handling rapidly.


Author(s):  
Johri Sabaryati ◽  
Linda Sekar Utami ◽  
Zulkarnain Zulkarnain

ABSTRAKPenelitian ini bertujuan untuk : (1) Mengembangkan media motion sensor eksperimen (MSE) dalam problem based learning (PBL) yang layak digunakan.(2) Mengetahui kualitas motion sensor eksperimen (MSE) dalam problem based learning (PBL). Secara umum peneltian ini melalui 3 tahap utama, yaitu:  (1)studi pendahuluan, (2) pembuatan dan pengembangan produk, (3) dan evaluasi. Tahapan pertama dan kedua telah dilakukan,sedangkan tahap ketiga sudah dilakukan kegiatan validasi ahli. Kemudian juga telah dilakukan uji coba pada siswa kelas X MA NW Narmada. Berdasarkan hasil penelitian yang telah dilakukan,maka dapat disimpulkan sebagai berikut:(1) Berdasarkan hasil validasi ahli dapat disimpulkan bahwa produk motion sensor eksperimen (MSE) dalam problem based learning (PBL) yang telah dikembangkan telah layak untuk digunakan.(2) Berdasarkan hasil validasi ahli dapat disimpulkan bahwa modul motion sensor eksperimen (MSE) dalam problem based learning (PBL) yang telah dikembangkan telah layak untuk digunakan. Berdasarkan hasi luji coba diketahui bahwa produk hasil pengembangan dapat menumbuhkan karakter siswa dalam kategori baik. Kata Kunci: motion sensor eksperiment; PBL; karakter siswa ABSTRACTThis study aims to: (1) Develop experimental motion sensor media (MSE) in problem based learning (PBL) that is feasible to use. (2) Determine the quality of experimental motion sensor (MSE) in problem based learning (PBL). In general, this research goes through 3 main stages, namely: (1) preliminary study, (2) product manufacture and development, (3) and evaluation. The first and second stages have been carried out, while the third stage has carried out expert validation activities. Then a trial has also been carried out on class X MA NW Narmada students. Based on the results of the research that has been done, it can be concluded as follows: (1) Based on the results of expert validation, it can be concluded that the experimental motion sensor (MSE) product in problem based learning (PBL) that has been developed is feasible to use. (2) Based on the results Expert validation can be concluded that the experimental motion sensor module (MSE) in problem based learning (PBL) that has been developed is feasible to use. Based on the test results, it is known that the product developed can grow the character of students in the good category. Keywords: motion sensor experiment; PBL; student character


2018 ◽  
Vol 138 (11) ◽  
pp. 1362-1374 ◽  
Author(s):  
Takuya Futagami ◽  
Toru Yano ◽  
Chingchun Huang ◽  
Takaaki Enohara

2017 ◽  
Vol 137 (2) ◽  
pp. 48-58
Author(s):  
Noriyuki Fujimori ◽  
Takatoshi Igarashi ◽  
Takahiro Shimohata ◽  
Takuro Suyama ◽  
Kazuhiro Yoshida ◽  
...  

This project is regarding the Motion controlled wheelchair for disabled. We are going to control motorized wheelchair using a head band having motion sensor and Arduino as controller. Problem: “often disabled who cannot walk find themselves being burden for their families or caretakers just for moving around the house. Disabled who are paralysed below head, who may not have functioning arms cannot control joystick controlled electric wheelchair.” This project is to solve their problem using a motion sensor to control their wheelchair. We are aiming towards building a more affordable, unique, low maintenance and available for all kind of head-controlled wheel chair.


Author(s):  
Chun-An Huang ◽  
Han-Yun Long ◽  
King-Ting Chiang ◽  
Li Chuang ◽  
Kevin Tsui

Abstract This paper demonstrates a new de-process flow for MEMS motion sensor failure analysis, using layer by layer deprocessing to locate defect points. Analysis tools used in this new process flow include IR optical microscopy, thermal system, SEM and a cutting system to de-process of MEMS motion sensor and successful observation defect points.


Author(s):  
Partha Pratim Roy ◽  
Pradeep Kumar ◽  
Shweta Patidar ◽  
Rajkumar Saini

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 861
Author(s):  
Kyeung Ho Kang ◽  
Mingu Kang ◽  
Siho Shin ◽  
Jaehyo Jung ◽  
Meina Li

Chronic diseases, such as coronary artery disease and diabetes, are caused by inadequate physical activity and are the leading cause of increasing mortality and morbidity rates. Direct calorimetry by calorie production and indirect calorimetry by energy expenditure (EE) has been regarded as the best method for estimating the physical activity and EE. However, this method is inconvenient, owing to the use of an oxygen respiration measurement mask. In this study, we propose a model that estimates physical activity EE using an ensemble model that combines artificial neural networks and genetic algorithms using the data acquired from patch-type sensors. The proposed ensemble model achieved an accuracy of more than 92% (Root Mean Squared Error (RMSE) = 0.1893, R2 = 0.91, Mean Squared Error (MSE) = 0.014213, Mean Absolute Error (MAE) = 0.14020) by testing various structures through repeated experiments.


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